Handle mechanism.



N. W. PERKINS; JR. HANDLE MECHANISM. APPLICATION FILED OCT. 24, 1 910. RENEWED JULY 7, 1911.

1,016,287. Patented Feb.6,1912.

' ATTORNEY To all whom, it may concern UNITED STA ES rgrnnr OFFICE.

NATHAN w. PERKINS, .13., or EAST ORANGE, NEW JERsE'Y HANDLE MECHANISM.

Specification of Letters Patent.

Application filed October 24, 1910, Serial No. 588,769. Renewed July 7, 1911. Serial No. 637,325.

Be it known that I, NATHAN WV. PERKINS, Jr., a citizen of the United States, residing at East Orange, county of Essex, and State of New Jersey, have invented certain new and useful Improvements in Handle Mechanism, of which the following is a specification.

This device belongs to that class of mechanism for operating adding-machines and cash registers, calculating machines, etc, in which the handle is moved slightly in its operating direction, permitting the mechanism to complete its forward cycle by unlocking the same. This movement of the mechanism-is to be regulated by some suitable governor so that if the handle moves slower than the governor is set to permit the mechanism to work .the moving parts will go faster'than the handle. On the other hand, if the handle travels faster, than the governor is set, then the handle will leave the mechanism behind and the same will follow until the forward'cycle is complete. In this invention, the same set of springs-servesito operate the driven member, andalso to return the handle and the driven member to their normal positions.

members.

Referring to the drawings, F igufre l is a side view of the mechanism in its normal position of rest. Fig. 2 is-a similar view of the mechanism after the handle has moved far enough forward to unlock the driven Fig. 3 is a similar View showing the handle in its extreme forward position ready to return to its normal position, as shown in Fig. 11 p In these views, similar letters of reference refer to similar parts in all cases.

Referring to the drawings, 0 1, is the end of a shaft which is in this case. the driven member. A piece 0 51 is provided with a lipat its extreme left-hand end, as shown in Fig. 2. This piece 0 51, is secured to the shaft 0 1, and turns with it. As shown in the accompanyingdrawings the amount of otation is about Loosely mounted on the shaft 0 1, is a handle 0 58, which serves as a source of power. Secured to the handle O 58, and moving with it, is an irregular plate 0 50, upon the upper end of which is pivotally mounted a hook O 53. This hook O 53, engages the lip on the end of the piece 0 5i, secured to the shaft 0 1, and is held normally in engagement by the small spring 0 82, Mounted'extraneouslyto the shaft 0 1, on suitable pivots O 15, and 15 O, are two bent levers O 57, and 57 O, the upper arm of O 57, being longer than its lower arm, and thelower arm of 57 0, being longer than its upper arm. A coil spring 0 80, extends and is connected between a stud O 13, mounted in the piece 0 50, and.

the lower end of the lever O 57. A similar views Figs. 1., 2 and 3. A small lever 055,

is pivoted in a suitable position to engage a projecting wing O 54:, of the hook O 53 and 8 held in its normal position by a spring The operation of this device is as follows: The normal position of the parts at rest being indicated in Fig. 1, and any suitable means being provided to prevent further rotation of the parts to the right, the handle 0 58, is moved in the direction of the small arrow shown in Fig. 1. This causes the wing O 54 of the hook O 53 to engage with the upper end of the lever O which offers a resist ance to the forward movement of the hook O 53 and causes 0 53 to disengage itself from the lip of O 51. O 51 on the shaft 0 1 being released immediately moves to the position indicated in Fig. 2 which is the other extreme end of their travel, any suitable stays being provided and the same not being shown in the drawings. The cause of this movement is the contrs. O 80 and 80 O. The studs 0 13 and 13 0 being secure to the piece *0 50 which moves with the handle ,0 58,. remaining comparatively stationary, the springs O 80 and 80 O pull on the levers O 57 and 57 O and through Patented Feb. 6, 1912.

on of the springs springs O 80 and 80 O are extended to their maximum length. This tension on the springs O 80 and 80 0 causes the mechanism to be in a state of unstable equilibrium and on releasing the handle 0 58 the springs O 80, and 80 Q, will partially contract and cause the parts to assume positions indicated in Fig. l, in which position the operation is all ready to be repeated.

This invention is especially applicable to the operating of adding and listing machines in which class of device it is essential that the handle be permitted to operate either faster or slower than the operating shaft of the machine, thereby preventing the operator from injuring the machine by the speed with which he pulls the handle. The same mechanism may also be used on all kinds of handle-operated machines wherein it is desirable that the machinedriving member should be flexibly connected to the operating handle. It is not my desire to be confined to the exact form of parts shown in the drawings as these may be modified in any suitable way to fit the particular requirements of any individual case in which the mechanism can be employed.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a snap operating mechanism, the combination with a movable member, of an vactuable operating device movable in relation thereto, latching means for holding the aforesaid movable member in normal position adapted to be tripped on the movement of the actuable operating device, and spring means interposed between the operating device-and movable member which is adapted to be tensioned by the movement ofthe operating device and acts to restore the movable member and operating device to normal position.

2. In a snap operating mechanism, the combination with a movable member, of an actuable operating device movable in relation thereto, latching means for holding the aforesaid movable member in normal position adapted to be tripped on the movement of the actuable operating device, pivoted levers, links connecting said levers to the movable member aforesaid,and springs connecting the levers to the operating device, whereby the springs are tensioned by the movement of the operating device.

3. Ina snap operating mechanism, the combination with a movable member, of an actuable' operating device movable in relation thereto, latching means for holding the aforesaid movable member in normal positionadapted tobe tripped on the movement of the actuable operating device, pivoted levers each having a long and a short arm, links connecting-the long arms of said leaforesmd amaze? vers to the movable member, and springs connecting the short arms of said levers to said operating device, whereby the springs are tensioned by the movement of the op erating device.

l. In a snap operating mechanism, the combination with a pivoted power transmitting member, of a pivoted handle mow able in relation thereto, latching means for' holding the said member in normal position adapted to be tripped on the movement of the handle, and a spring operating de vice operatively connected to the handle and to the power transmitting member on opposite sides of the pivot thereof which is adapted to be tensioned by the movement of the operating device. a

5. In a snap operating mechanism, tne combination with a pivoted power transmitting member, of a pivoted handle movable in relation thereto, latching means for holding the said member in normal position adapted to be tripped on the movement of the handle, pivoted levers, springs connecting said levers to the handle on opposite sides of the fulcrum thereof, and links connecting the levers to the power transmitting member on opposite sides of its fulcrum, said springs being adapted to be tensioned by the movement of the operating device.

6. In a snap operating mechanism, the combination with a movable member, of'an actuable operating device movablein relatipn thereto, latching means for holding the aforesaid movable member in normal position adapted to be tripped on the movement of the actuable operating device,

combination with a pivoted member, of a pivoted actuable operating device movable in relation thereto, latching means for holding the aforesaid movable member in normal position adapted to be tripped on the movement of the actuable operating device, a spring operating device operatively connected to the operating device and to the movable member aforesaid on opposite sides of the pivot thereof which isadapted to be tensioned by the movement of the operating device, and means for causing the latching means to re-lock the movable member and operating device together so that they Wlll be returned together to normal position by p the reaction of the spring operating means 1 8. In a snap operating mechanism, the combination with a pivoted member, of a pivoted actuating handle movable in relation thereto, a latch carried by one of said parts for engagement with the other of said parts to hold the pivotedmember in normal position adapted to be tripped on the movement of the operating handle, spring means interposed between the operating handle and the pivoted member aforesaid which is adapted to be tensioned by the movement of the handle, and means for automatically relocking the handle and' i nember together after the handle has performed its advance stroke so that the handle and member will 15 be automatically returned together to normal position by the reaction of the spring means aforesaid.

In testimony whereof, I hereunto aflix my signature in presence of two witnesses.

NATHAN W. PERKINS, JR. Witnesses:

HALCOLM ELLIs, WALTER J. BUBCHE'I'I. 

